Improvement in spark-abbesteb



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ANDREW' PIJARSALI'., QF ATLANTA, GEORGIA. Letter@ Patent No. 69,931, mdoctober 15, 18er.

IMPROVEMENT IN SPARK-ARRESTER.

TO ALL WHOM IT MAYl CONCERN:` p A Be 'it known that I, ANDREW PEARSALL,of Atlanta, in the county of Fulton, and in the State of Georgia,

have invented certain new and useful Improvement in Spark-Arrester; anddo hereby declare that the following is u, full, clear, and exactdescription thereof, reference being had to the accompanying drawinggendto the letters of reference marked thereon, making a part ofthisSpecicatiOn.

In the annexed drawings A represents the usual exterior form of nsmoke-stack, which is provided with .on inner pipe, B, which extendsnear to the top of thc main staclc. This pipe B has a. circular flange,E, at its top, which projects down'at a suitable angle below the top ofvseid pipe. D represents a. flange, secured to the inner side of themain stack A, on a line with the top of the inner pipe B. This vflangeisstraight a short distance in the stack, und is then bent'at an angle,so that the inner end thereof will bebelovvthe outer end of the` flangeE,and l'eoving a snmll space (see :1: z) between the two ange's, throughwhich the spanks will pass into the spark-chamber C. G represents acircular metallic disk, which has a semicircular groove Qn its underside,

from the centre of which plate projects a cone, whose apex is withinthe' top part of the pipe B. This disk is supported, u. short distanceabove the pipe B. by means of four or more bolts a a, so that as thesparks come up l they strike the cone, are thrown into the groove, anddropped upon the flange side upon the ange D, down through thc opening2:, and into the spark-chamber.

Having thus fully described my invention, what I claim us new, anddesire to secure by Letters Patent, `is The arrangement of the pipe B,with its ange E and disk G, as constructed, in combination with pipe A,having flange D, formed ns described, to project beneath flange E,having outlet into chamber C, as set forth, and for the purposesdescribed.

In testimony that I claim the foregoing I have hereunto set my hand andseal this 27thday oJuiy, I86I.

A. PEARSALL. [SEAL] Witnesses:

F. M. ALLEN, E.' T. ALLEN, L. B. FoLsoM.

